Storage box



FIG. 1 is a perspective view of a storage box showing my new design;

FIG. 2 is a front elevation thereof; the rear side elevation being a mirror image thereof;

FIG. 3 is a right side elevation thereof; the left side elevation being a mirror image thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a storage box, as shown and described. 